from jsonschema import validate

schema = {
    "type": "object",
    "properties": {
        "rabbitmq": {
            "type": "object",
            "properties": {
                "host": {"type": "string"},
                "port": {"type": "number"},
                "root": {"type": "string"},
                "login": {"type": "string"},
                "password": {"type": "string"},
                "exchange": {"type": "string"}
            },
            "required": [
                "host",
                "port",
                "root",
                "login",
                "password",
                "exchange"
            ]
        },
        "sftp": {
            "type": "object",
            "properties": {
                "host": {"type": "string"},
                "port": {"type": "number"},
                "login": {"type": "string"},
                "password": {"type": "string"},
                "cdr_dir": {"type": "string"},
                "remove_after_download": {"type": "string"}
            },
            "required": [
                "host",
                "port",
                "login",
                "password",
                "cdr_dir",
                "remove_after_download"
            ]
        }
    },
    "required": [
        "rabbitmq",
        "sftp"
    ]
}

obj = {
    "cassandra": {
        "cluster": [
            "192.168.99.100"
        ],
        "port": 9042,
        "keyspace": "cdr",
        "batch_size": 50
    },
    "redis": {
        "host": "192.168.99.100",
        "port": 6379,
        "password": "",
        "db": 0
    },
    "delimiter": ";"
}

print validate(schema, obj)